Lake State Park is a 280 acres (110 ha) park 21 miles (34 km) northeast of Vancouver
, U.S., consisting of an ancient 400 feet (120 m) volcano in the Boring Lava Field where a magma-induced steam explosion made a large bean-shaped crater, a maar, which later filled with water, forming a crater lake.The Park is vegetated with mostly evergreen forest, and the lake is stocked with bass, catfish and trout. Facilities include a swimming area, boat launch ramp, camping grounds and cabin rentals. Bridle trails ring the lake and criss-cross the summit area. Paddleboats may be rented for $10 hourly.The property at the lake is now a Washington State Park.